After fatally shooting a man in an argument over a double-parked car, the security guard who police said pulled the trigger and two witnesses -- one of whom later became a West Contra Costa school district police officer -- took a vow of secrecy, authorities say.

Even after joining the force two months after the incident, Joseph Jason Lee kept quiet because "he was worried about being fired and destroying his lifelong dream" of being a police officer, investigators said in court documents released Friday.

His dream ended Wednesday, when Alameda County sheriff's investigators arrested Lee, 27, and district officials fired him. He'd been on the job two months. The San Lorenzo man was arraigned Friday with security guards Mazzin "Mazz" Elhosseiny, 34, of Castro Valley and his cousin, Hussam "Sam" Elhosseiny, 25, of San Lorenzo.

The shooting of Martress Rogers, 23, on Nov. 12 followed the most mundane of arguments, authorities said.

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Rogers argued with the suspects about Mazzin Elhosseiny double-parking his Ford Excursion outside the Ashland Gardens apartment in San Lorenzo where Lee and Hussam Elhosseiny lived, said Alameda County sheriff's Cmdr. Greg Ahern.

Lee -- who was not yet a school district police officer -- broke a window on Rogers' red Chevrolet Corsica with his fist, cutting himself, authorities said. Hussam Elhosseiny fired his 9 mm handgun, hitting Rogers in the arm and chest, Ahern said.

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Rogers drove about 2 miles before staggering out of his car outside his apartment building on Tropic Court in San Leandro. He died at Eden Medical Center in Castro Valley, leaving behind his pregnant fiancee, Lailani Lopez, and their 3-year-old son.

Prosecutors charged Hussam Elhosseiny, who reported his handgun stolen a week after the killing, with murder and other charges. Lee and Mazzin Elhosseiny face charges of being accessories after the fact to murder.

"I hope they get what they deserve," said Lopez, who had been with the victim for nine years and is due to give birth in July. Lopez said she was "really shocked" to learn that Lee became a police officer.

During Friday's arraignment in Hayward, Deputy District Attorney Annie Saadi said Hussam Elhosseiny had been making arrangements to leave the country, possibly to his native Egypt.

Superior Court Judge Alfred Delucchi ordered the defendant held without bail. He set Mazzin Elhosseiny's bail at $250,000 and Lee's at $25,000.

The judge's decision to grant bail to the two men prompted Rogers' brother, Marc Rogers, 23, to sputter in disgust and utter expletives outside court.

The slaying happened after the suspects and at least four other men had been drinking in San Francisco, Ahern said.

In an interview with investigators, Lee claimed that Rogers had almost hit them with his car, court papers said. Lee said he wanted to come forward but was overruled. Ultimately, they decided speaking to investigators "would affect their lives negatively," authorities said.

Authorities identified the suspects with help from acquaintances, including a witness who was there when the shots were fired. At the time of the killing, the three suspects worked for Mazzin Elhosseiny's firm, West Coast Security and Patrol Co.

Lee, a former Richmond high school volleyball coach, left the security firm in January when he joined the West Contra Costa Unified School District police force, which has 19 officers.

The district terminated Lee's contract Wednesday and placed a second officer, Manuel Regalado, on paid leave Thursday after authorities placed him at the scene, a district official said.